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Finding the Fourth Proportional to 403,757.60, 605,636.40 and 254,458.40

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Solution

The fourth proportional to 403,757.60, 605,636.40 and 254,458.40 is: 381,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,757.60 : 605,636.40 = 254,458.40 : x
  2. Step 2: Convert to fraction form
    403,757.60/605,636.40 = 254,458.40/x
  3. Step 3: Cross multiply
    403,757.60x = 605,636.40 × 254,458.40
  4. Step 4: Simplify right side
    403,757.60x = 154,109,269,325.76
  5. Step 5: Solve for x
    x = 154,109,269,325.76/403,757.60
  6. Step 6: Final answer
    x = 381,687.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.